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2016 ; 6
(ä): 33452
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Identification of Viruses in Cases of Pediatric Acute Encephalitis and
Encephalopathy Using Next-Generation Sequencing
#MMPMID27625312
Kawada J
; Okuno Y
; Torii Y
; Okada R
; Hayano S
; Ando S
; Kamiya Y
; Kojima S
; Ito Y
Sci Rep
2016[Sep]; 6
(ä): 33452
PMID27625312
show ga
Acute encephalitis/encephalopathy is a severe neurological syndrome that is
occasionally associated with viral infection. Comprehensive virus detection
assays are desirable because viral pathogens have not been identified in many
cases. We evaluated the utility of next-generation sequencing (NGS) for detecting
viruses in clinical samples of encephalitis/encephalopathy patients. We first
determined the sensitivity and quantitative performance of NGS by comparing the
NGS-determined number of sequences of human herpesvirus-6 (HHV-6) in clinical
serum samples with the HHV-6 load measured using real-time PCR. HHV-6 was
measured as it occasionally causes neurologic disorders in children. The
sensitivity of NGS for detection of HHV-6 sequences was equivalent to that of
real-time PCR, and the number of HHV-6 reads was significantly correlated with
HHV-6 load. Next, we investigated the ability of NGS to detect viral sequences in
18 pediatric patients with acute encephalitis/encephalopathy of unknown etiology.
A large number of Coxsackievirus A9 and mumps viral sequences were detected in
the cerebrospinal fluid of 2 and 1 patients, respectively. In addition, Torque
teno virus and Pepper mild mottle viral sequences were detected in the sera of
one patient each. These data indicate that NGS is useful for detection of
causative viruses in patients with pediatric encephalitis/encephalopathy.